Wireless communication method, terminal device, and network device

ABSTRACT

A wireless communication method, a terminal device, and a network device are provided. The method includes: a terminal device receives an activation signaling sent by a network device, wherein the activation signaling is used for activating the terminal device to persistently report first CSI; the terminal device reports persistently the first CSI to the network device after receiving the activation signaling until the terminal device receives a deactivation signaling sent by the network device, wherein the deactivation signaling is used for instructing the terminal device to stop reporting the first CSI.

CROSS-REFERENCE TO RELATED APPLICATION(S)

This application is a 371 application of International Application No.PCT/CN2017/075243, filed on Feb. 28, 2017, the entire disclosure ofwhich is hereby incorporated by reference.

TECHNICAL FIELD

The present disclosure relates to the field of communication, and moreparticularly to a wireless communication method, a terminal device, anda network device.

BACKGROUND

In a Long Term Evolution (LTE) communication system, a terminal devicemay measure a channel state information reference signal (CSI-RS) sentby a network device to obtain channel state information (CSI).

Currently, a 5G communication system is being discussed. In the 5Gcommunication system, how to realize feedback of the CSI to meetrequirements for communication performance of the 5G communicationsystem is an urgent problem to be solved.

SUMMARY

Implementations of the present disclosure provide a wirelesscommunication method, a terminal device, and network device.

In a first aspect, a wireless communication method is provided. Themethod includes: a terminal device receives an activation signaling sentby a network device, wherein the activation signaling is used foractivating the terminal device to persistently report first channelstate information (CSI); and the terminal device reports persistentlythe first CSI to the network device after receiving the activationsignaling until the terminal device receives a deactivation signalingsent by the network device, wherein the deactivation signaling is usedfor instructing the terminal device to stop reporting the first CSI.

In combination with the first aspect, in one possible implementation ofthe first aspect, reporting, by the terminal device, persistently thefirst CSI to the network device, includes: the terminal device reportspersistently the first CSI to the network device through a physicaluplink shared channel (PUSCH) or a physical uplink control channel(PUCCH).

In combination with the first aspect or any above possibleimplementation thereof, in another possible implementation of the firstaspect, the first CSI includes at least one of: a channel stateinformation reference signal resource indicator (CRI), a rank indicator(RI), a pre-coding matrix indicator (PMI), channel quality information(CQI), a quantized value of channel information, and a quantized valueof interference.

In combination with the first aspect or any above possibleimplementation thereof, in another possible implementation of the firstaspect, the method further includes: the terminal device performspersistent CSI measurement to obtain the first CSI.

In combination with the first aspect or any above possibleimplementation thereof, in another possible implementation of the firstaspect, performing, by the terminal device, the persistent CSImeasurement to obtain the first CSI, includes: the terminal devicedetermines at least one of the following according to content includedin the first CSI, and performs the persistent CSI measurement accordingto the at least one of the following to obtain the first CSI: a resourcefor performing the persistent CSI measurement, a quantity of channelstate information reference signal (CSI-RS) ports used for performingthe persistent CSI measurement, and an assumption of a CSI-RStransmission beam on the resource for performing the CSI measurement.

In combination with the first aspect or any above possibleimplementation thereof, in another possible implementation of the firstaspect, reporting, by the terminal device, persistently the first CSI tothe network device, includes: the terminal device determines a firsttime domain resource for reporting the first CSI for a first timeaccording to content included in the first CSI; and the terminal devicereports the first CSI for the first time on the first time domainresource.

In combination with the first aspect or any above possibleimplementation thereof, in another possible implementation of the firstaspect, the activation signaling includes first information forindicating content included in the first CSI; reporting, by the terminaldevice, persistently the first CSI to the network device, includes: theterminal device reports persistently the first CSI to the network deviceaccording to the first information, wherein the first CSI includes thecontent indicated by the first information.

In combination with the first aspect or any above possibleimplementation thereof, in another possible implementation of the firstaspect, the activation signaling includes second information forindicating time when the first CSI is reported for a first time;reporting, by the terminal device, persistently the first CSI to thenetwork device, includes: the terminal device determines a second timedomain resource for reporting the first CSI for the first time accordingto the second information, and reports the first CSI to the networkdevice for the first time on the second time domain resource.

In combination with the first aspect or any above possibleimplementation thereof, in another possible implementation of the firstaspect, the terminal device determines time domain resources forsubsequent persistent reporting of the first CSI according to the secondtime domain resource for reporting the first CSI for the first time anda period obtained in advance for reporting persistently the first CSI.

In combination with the first aspect or any above possibleimplementation thereof, in another possible implementation of the firstaspect, the activation signaling includes third information forindicating a resource for reporting the first CSI; reporting, by theterminal device, persistently the first CSI to the network device,includes: the terminal device reports persistently the first CSI to thenetwork device on the resource indicated by the third information.

In combination with the first aspect or any above possibleimplementation thereof, in another possible implementation of the firstaspect, reporting, by the terminal device, persistently the first CSI tothe network device, includes: the terminal device reports persistentlythe first CSI to the network device on persistent time domain resourceunits for uplink transmission; or the terminal device reports the firstCSI to the network device periodically with a certain period.

In combination with the first aspect or any above possibleimplementation thereof, in another possible implementation of the firstaspect, reporting, by the terminal device, persistently the first CSI tothe network device, includes: the terminal device determines the firstCSI reported each time according to a dependency relationship among CSImeasurement, and reports the first CSI.

In combination with the first aspect or any above possibleimplementation thereof, in another possible implementation of the firstaspect, measurement for the first CSI reported each time does not dependon the first CSI reported at other times; or, the first CSI for whichmeasurement has a dependency relationship, is reported on persistentreporting resources.

In combination with the first aspect or any above possibleimplementation thereof, in another possible implementation of the firstaspect, the activation signaling includes fourth information forindicating a dependency relationship among measurement for the first CSIreported at various times.

In combination with the first aspect or any above possibleimplementation thereof, in another possible implementation of the firstaspect, reporting, by the terminal device, persistently the first CSI tothe network device, includes: the terminal device reports persistentlythe first CSI to the network device by adopting at least one of: a sameMultiple Input Multiple Output (MIMO) transmission mode, a samemodulation coding manner, a same quantity of orthogonal frequencydivision multiplexing symbols, and a same frequency domain resource.

In combination with the first aspect or any above possibleimplementation thereof, in another possible implementation of the firstaspect, the method further includes: the terminal device receives afirst downlink control information (DCI) signaling for scheduling atransmission of uplink data; the terminal device determines according tothe first DCI signaling that the transmission of the uplink data needsto be performed in a first time domain resource unit in which the firstCSI is persistently reported; reporting, by the terminal device,persistently the first CSI to the network device, includes: the terminaldevice reports the first CSI to the network device in a way ofmultiplexing with the uplink data in the first time domain resourceunit.

In combination with the first aspect or any above possibleimplementation thereof, in another possible implementation of the firstaspect, the method further includes: the terminal device receives asecond DCI signaling for scheduling aperiodic CSI reporting; theterminal device determines according to the second DCI signaling thatthe aperiodic CSI reporting needs to be performed in a second timedomain resource unit in which the first CSI is persistently reported;the method further includes: the terminal device performs the aperiodicCSI reporting based on the second DCI signaling, and suspends persistentreporting of the first CSI in the second time domain resource unit.

In combination with the first aspect or any above possibleimplementation thereof, in another possible implementation of the firstaspect, the activation signaling and deactivation signaling are a DCIsignaling or a media access control (MAC) signaling.

In a second aspect, a wireless communication method is provided. Themethod includes: a network device sends an activation signaling to aterminal device, wherein the activation signaling is used for activatingthe terminal device to persistently report first channel stateinformation (CSI); the network device receives persistently the firstCSI reported by the terminal device; and the network device sends adeactivation signaling to the terminal device and stops receiving thefirst CSI, wherein the deactivation signaling is used for instructingthe terminal device to stop reporting the first CSI.

In combination with the second aspect, in one possible implementation ofthe second aspect, receiving, by the network device, persistently thefirst CSI reported by the terminal device, includes: the network devicereceives persistently the first CSI through a physical uplink sharedchannel (PUSCH) or a physical uplink control channel (PUCCH).

In combination with the second aspect or any above possibleimplementation thereof, in another possible implementation of the secondaspect, the first CSI includes at least one of: a channel stateinformation reference signal resource indicator (CRI), a rank indicator(RI), a pre-coding matrix indicator (PMI), channel quality information(CQI), a quantized value of channel information, and a quantized valueof interference.

In combination with the second aspect or any above possibleimplementation thereof, in another possible implementation of the secondaspect, the method further includes: the network device obtains beaminformation of downlink beam-forming according to CRI when the first CSIincludes the CRI; or, the network device schedules downlink data for theterminal device according to RI, PMI, and CQI when the first CSIincludes the RI, the PMI, and the CQI; or, the network device schedulesdownlink data for the terminal device according to RI and CQI when thefirst CSI includes the RI and the CQI.

In combination with the second aspect or any above possibleimplementation thereof, in another possible implementation of the secondaspect, the activation signaling includes at least one of firstinformation, second information, third information, and fourthinformation, wherein, the first information is used for indicatingcontent included in the first CSI; the second information is used forindicating time when the first CSI is reported for a first time; thethird information is used for indicating a resource for reporting thefirst CSI; the fourth information is used for indicating a dependencyrelationship among measurement for the first CSI reported at varioustimes.

In a third aspect, a terminal device is provided, which may includeunits for implementing the method in the first aspect or any possibleimplementation thereof.

In a fourth aspect, a network device is provided, which may includeunits for implementing the method in the second aspect or any possibleimplementation thereof.

In a fifth aspect, a terminal device is provided, which may include amemory and a processor. The memory stores instructions, and theprocessor is used for calling the instructions stored in the memory toperform the method in the first aspect or any optional implementationthereof.

In a sixth aspect, a network device is provided, which may include amemory and a processor. The memory stores instructions, and theprocessor is used for calling the instructions stored in the memory toperform the method in the second aspect or any optional implementationthereof.

In a seventh aspect, a computer readable medium is provided. Thecomputer readable medium stores program codes executable by a terminaldevice, and the program codes include instructions for executing themethod of the first aspect or the method in any one of the variousimplementations of the first aspect, or include instructions forexecuting the method of the second aspect or the method in any one ofthe various implementations of the second aspect.

In an eighth aspect, a system chip is provided, which includes an inputinterface, an output interface, a memory, and a processor. The processoris used for executing codes in the memory, and when the codes areexecuted, the processor may implement the methods in the first aspectand various implementations thereof, or execute the methods in thesecond aspect and various implementations thereof.

BRIEF DESCRIPTION OF DRAWINGS

To describe the technical solution of implementations of the presentdisclosure more clearly, accompanying drawings that need to be used inthe description of implementations or the prior art will be brieflyintroduced below. It is apparent that the accompanying drawingsdescribed below are only some implementations of the present disclosure;and for a person of ordinary skill in the art, other drawings may beobtained according to these drawings without paying an inventive effort.

FIG. 1 is a schematic diagram of a wireless communication systemaccording to an implementation of the present disclosure.

FIG. 2 is a schematic flowchart of a wireless communication methodaccording to an implementation of the present disclosure.

FIG. 3 is a schematic flowchart of a wireless communication methodaccording to an implementation of the present disclosure.

FIG. 4 is a schematic block diagram of a terminal device according to animplementation of the present disclosure.

FIG. 5 is a schematic block diagram of a network device according to animplementation of the present disclosure.

FIG. 6 is a schematic block diagram of a communication device accordingto an implementation of the present disclosure.

FIG. 7 is a schematic block diagram of a system chip according to animplementation of the present disclosure.

DETAILED DESCRIPTION

The technical solution in implementations of the present disclosure willbe described below with reference to the drawings in implementations ofthe present disclosure. It is apparent that the implementationsdescribed are just some implementations of the present disclosure, butnot all implementations of the present disclosure. According to theimplementations of the present disclosure, all other implementationsachieved by a person of ordinary skill in the art without paying aninventive effort are within the protection scope of the presentdisclosure.

The technical solution of the implementations of the present disclosuremay be applied to various communication systems, such as, a GlobalSystem of Mobile communication (GSM) system, a Code Division MultipleAccess (CDMA) system, a Wideband Code Division Multiple Access (WCDMA)system, a General Packet wireless Service (GPRS) system, a Long TermEvolution (LTE) system, a LTE Frequency Division Duplex (FDD) system, aLTE Time Division Duplex (TDD) system, a Universal MobileTelecommunication System (UMTS) system, a Worldwide Interoperability forMicrowave Access (WiMAX) communication system, or a future 5G system.

FIG. 1 shows a wireless communication system 100 to which animplementation of the present disclosure is applied. The wirelesscommunication system 100 may include a network device 110. The networkdevice 110 may be a device that communicates with a terminal device. Thenetwork device 110 may provide communication coverage for a specificgeographical area, and may communicate with a terminal device (e.g., UE)in the coverage area. Optionally, the network device 110 may be a BaseTransceiver Station (BTS) in a GSM system or CDMA system, a NodeB (NB)in a WCDMA system, an Evolutional Node B (eNB or eNodeB) in an LTEsystem, or a radio controller in a Cloud Radio Access Network (CRAN). Orthe network device may be a relay station, an access point, avehicle-mounted device, a wearable device, a network side device in afuture 5G network, or a network device in a future evolved Public LandMobile Network (PLMN), etc.

The wireless communication system 100 further includes at least oneterminal device 120 in the coverage area of the network device 110. Theterminal device 120 may be mobile or fixed. Optionally, the terminaldevice 120 may be referred to as an access terminal, a User Equipment(UE), a subscriber unit, a subscriber station, a mobile station, aremote station, a remote terminal, a mobile device, a user terminal, aterminal, a wireless communication device, a user agent, or a userapparatus. The access terminal may be a cellular phone, a cordlessphone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop(WLL) station, a Personal Digital Assistant (PDA), a handheld devicewith a wireless communication function, a computing device, or otherprocessing device connected to a wireless modem, a vehicle-mounteddevice, a wearable device, a terminal device in a future 5G network, ora terminal device in a future evolved Public Land Mobile Network (PLMN),or the like.

Optionally, the 5G system or network may also be referred to as a NewRadio (NR) system or network.

FIG. 1 exemplifies one network device and two terminal devices.Optionally, the wireless communication system 100 may include multiplenetwork devices, and another quantity of terminal devices may beincluded within the coverage area of each network device, which is notlimited in implementations of the present disclosure.

Optionally, the wireless communication system 100 may further includeother network entities such as a network controller, a mobile managemententity, and implementations of the present disclosure are not limitedthereto.

It should be understood that the terms “system” and “network” are oftenused interchangeably in this document. The term “and/or” in thisdocument is merely an association relationship describing associatedobjects, indicating that there may be three relationships, for example,A and/or B may indicate three cases: A alone, A and B, and B alone. Inaddition, the symbol “/” in this document generally indicates thatobjects before and after the symbol “/” have an “or” relationship.

FIG. 2 is a schematic flowchart of a wireless communication method 200according to an implementation of the present disclosure. The method 200may optionally be used in the wireless communication system 100described above.

As shown in FIG. 2, the method 200 includes the following contents.

In 210, a terminal device receives an activation signaling sent by anetwork device, and the activation signaling is used for activating theterminal device to persistently report first Channel State Information(CSI).

Optionally, the activation signaling may be a Downlink ControlInformation (DCI) signaling or a Media Access Control (MAC) signaling.

In 220, the terminal device persistently reports the first CSI to thenetwork device after receiving the activation signaling until theterminal device receives a deactivation signaling sent by the networkdevice, wherein the deactivation signaling is used for instructing theterminal device to stop reporting the first CSI.

Optionally, the deactivation signaling may be a DCI or MAC signaling.

Optionally, the terminal device persistently reports the first CSI tothe network device through a Physical Uplink Shared Channel (PUSCH).

Optionally, the terminal device persistently reports the first CSI tothe network device through a Physical Uplink Control Channel (PUCCH).

More feedback information may be carried when persistent CSI reportingis performed through the PUSCH, especially under a condition ofsufficient uplink resources.

Optionally, the terminal device uses the same transmission manner topersistently report the first CSI to the network device.

Wherein, the same transmission manner mentioned in the implementation ofthe present disclosure includes but is not limited to adopting at leastone of: a same Multiple Input Multiple Output (MIMO) transmission mode,a same modulation coding manner, a same quantity of orthogonal frequencydivision multiplexing (OFDM) symbols, and a same frequency domainresource.

For example, a MIMO transmission mode with uplink transmit diversity maybe adopted, and a lower modulation coding manner is adopted, therebyensuring a reliability of the CSI.

Optionally, a fixed quantity of Physical Resource Blocks (PRBs) may beoccupied, thereby saving the overhead of signaling configuration.

Optionally, the first CSI includes at least one of: a CSI-RS resourceindicator (CRI), a rank indicator (RI), a pre-coding matrix indicator(PMI), channel quality information (CQI), a quantized value of channelinformation, and a quantized value of interference.

Optionally, the quantized value of channel information may be aquantized value of a channel covariance matrix, a quantized value of achannel feature vector, or a quantized value of channel estimationitself.

Optionally, the activation signaling includes first information forindicating content included in the first CSI; and the terminal devicepersistently reports the first CSI to the network device according tothe first information, and the first CSI includes the content indicatedby the first information.

Optionally, the first information is used for indicating one of:

CRI; or

RI, PMI, and CQI; or

CRI, RI, PMI, and CQI; or

RI and CQI; or

CRI, RI, and CQI.

The activation signaling may indicate the content needed to be includedin the first CSI through a value(s) of a bit(s) included in the firstinformation. For example, the first information may be 1 bit, and thevalue of the bit may indicate one of two types of CSI contents: {CRI,RI/PMI/CQI}. For example, when the value of the bit is 0, it indicatesthat the first CSI needs to include the CRI, and when the value of thebit is 1, it indicates that the first CSI needs to include the RI, PMI,and CQI.

Optionally, the value of the 1 bit may indicate one of the following twotypes of contents: {CRI, RI/PMI/CQI/CRI}, or the value of the 1 bit mayindicate one of the following two types of contents: {CRI, RI/CQI}.

Optionally, the terminal device performs persistent CSI measurement toobtain the first CSI.

Herein, a resource for persistent CSI measurement may be a resource forperiodical CSI-RS transmission.

Herein, the resource used for periodical CSI-RS transmission is usuallya CSI-RS resource configured by a network device, and its configurationinformation may include a time domain offset, a period, etc. Therefore,a terminal device may perform a CSI measurement based on the resourceused for periodical CSI-RS transmission according to the configurationinformation.

Optionally, the network device may indicate the resource for periodicalCSI-RS transmission to the terminal device in advance through a highlayer signaling or a DCI signaling.

For example, one CSI-RS resource may be indicated as a resource forperforming the persistent CSI measurement from multiple CSI-RS resourcesconfigured by a MAC layer message or a Radio Resource Control (RRC)message through a DCI signaling.

Herein, one resource configuration may correspond to one CSI-RSresource, that is, the resource configuration of one CSI-RS resourceamong the multiple CSI-RS resources is different from that of otherCSI-RS resources, for example, at least one of the time domain offsetand the period may be different.

Optionally, if the CSI-RS resource for persistent CSI measurementincludes multiple CSI-RS resources, the terminal device may assume thatCSI-RS signals transmitted on the multiple resources use the same beamor use different beams. Or, if the CSI-RS resource for persistent CSImeasurement contains only one CSI-RS resource, the terminal device mayassume that different ports of CSI-RS signals transmitted on theresource use the same beam or use different beams. If the terminaldevice assumes that different beams are used, the first CSI needs toinclude a CSI-RS resource indicator (CRI).

Optionally, when persistent CSI measurements are performed, content ofthe first CSI obtained by each measurement may be different.

Optionally, different contents of CSI may be obtained from CSI-RSresources of different resource configurations, and may not be carriedin one CSI reporting, or may be carried in one CSI reporting.

Optionally, different contents may be obtained from different timedomain resource units of a CSI-RS resource of the same resourceconfiguration, and may not be carried in one CSI reporting, or may becarried in one CSI reporting.

Optionally, the terminal device determines at least one of the followingaccording to the content included in the first CSI, and performspersistent CSI measurement according to at least one of the following toobtain the first CSI: a resource for performing the persistent CSImeasurement, a quantity of CSI-RS ports used for performing thepersistent CSI measurement, and an assumption of a CSI-RS transmissionbeam on the resource for performing the persistent CSI measurement.

For example, if the first CSI only includes CRI, the terminal deviceneeds to perform a CSI measurement based on multiple CSI-RS resources;if the content of the first CSI includes RI and CQI, or includes RI, PM,and CQI, the terminal device only needs to perform the CSI measurementbased on one CSI-RS resource.

For example, if the first CSI only includes CRI, the terminal deviceneeds the first 1 or 2 CSI-RS ports (port 0, or ports 0 and 1) of theresource for performing the CSI measurement to perform the CSImeasurement; and if the first CSI includes RI and CQI, or includes RI,PMI, and CQI, the terminal device needs all CSI-RS ports on the resourcefor performing the CSI measurement to perform the CSI measurement.

For example, if the content of the first CSI only includes CRI, theterminal device assumes that different CSI-RS ports on a CSI-RS resourceon which measurement is based adopt different transmission beams,thereby a CSI measurement is performed; and if the content of the firstCSI includes RI and CQI, or includes RI, PMI, and CQI, the terminaldevice assumes that different CSI-RS ports on the CSI-RS resource onwhich the measurement is based adopt the same transmission beam.

Optionally, the terminal device determines a first time domain resourcefor reporting the first CSI for a first time according to the contentincluded in the first CSI; and the terminal device reports the first CSIfor the first time on the first time domain resource.

Optionally, the terminal device determines time domain resources forsubsequent persistent reporting of the first CSI according to the firsttime domain resource for reporting the first CSI for the first time anda period obtained in advance for persistent reporting the first CSI.

Optionally, if the content of the first CSI reported every time is notalways the same, the terminal device may determine a first time domainresource for reporting the first CSI for a first time according to thecontent included in the first CSI reported for the first time; and thefirst CSI is reported for the first time on the first time domainresource.

For example, if the first CSI reported for the first time only includesCRI, a shorter feedback delay may be adopted, for example, a differencebetween reception of an activation signaling and CSI feedback for thefirst time is 1 time slot.

For example, if the first CSI reported for the first time includes RI,PMI, and CQI, or includes RI and CQI, a longer feedback delay may beadopted, for example, a difference between reception of the activationsignaling and the CSI feedback for the first time is 2 time slots.

For example, if the first CSI reported for the first time includes achannel covariance matrix or an interference covariance matrix, a muchlonger feedback delay is required. For example, a difference betweenreception of the activation signaling and the CSI feedback for the firsttime is 3 time slots.

Optionally, the activation signaling includes second information forindicating time when the first CSI is reported for a first time; and theterminal device determines a second time domain resource for reportingthe first CSI for the first time according to the second information,and reports the first CSI to the network device for the first time onthe second time domain resource.

Optionally, the terminal device determines time domain resources forsubsequent persistent reporting of the first CSI according to the secondtime domain resource for reporting the first CSI for the first time anda period obtained in advance for persistently reporting the first CSI.

Optionally, in the implementation of the present disclosure, the secondinformation may indicate the time for reporting the first CSI for thefirst time by indicating a timing relationship between reception of theactivation signaling and reporting of the first CSI for the first time.Specifically, the timing relationship may be used for indicating aquantity of time resource units that differ between the time when thefirst CSI is reported for the first time and the time when theactivation signaling is received, for example, a quantity of subframesor a quantity of time slots.

If contents of the first CSI reported for the first time are different,the timing relationships of the second information may be different. Inother words, different timing relationships may be indicated by the sameindication field, that is, timing relationships indicated by the sameindication field are different for different CSI contents.

For example, as shown in Table 1 below, the indication field of thetiming relationship may include two bits. Assuming that a value of thebits in the indication field is 01, it indicates that when the first CSIreported for the first time only includes CRI, the feedback delay N(i.e., a quantity of time domain resource units that differ between thetime when an activation signaling is received and the time when the CSIis reported) is 1, and when the first CSI reported for the first timeincludes RI, PMI, and CQI, the feedback delay N is 2.

TABLE 1 Indication field of a timing relationship CRI RI/PMI/CQI 00 N =0 N = 0 01 N = 1 N = 2 10 N = 2 N = 4 11 — —

Optionally, in the implementation of the present disclosure, the timedomain resource reported for the first time may be determined accordingto the content included in the first CSI reported for the first time,which may be understood as: for a case in which the content reportedevery time is not always the same, time when each content is reportedfor the first time may be determined, and corresponding content may bereported for the first time according to the time. For example, still asshown in Table 1, assuming that the terminal device needs to report CRI,and report RI, PMI, and CQI, then starting time for reporting CRI forthe first time and starting time for reporting RI, PMI, and CQI for thefirst time may be determined according to the shown in Table 1.

Optionally, the terminal device persistently reports the first CSI tothe network device on persistent time domain resource units for uplinktransmission; or, reports the first CSI to the network deviceperiodically with a certain period.

Optionally, for the first CSI with different contents, reporting periodsmay be different, and/or sizes of a resource occupied by each reportingmay be different.

Optionally, the activation signaling includes third information forindicating a resource for reporting the first CSI. For example, a periodfor reporting the first CSI, a size of a resource occupied by eachfeedback, time domain offsets of feedback of CSI with differentcontents, etc. On the resource indicated by the third information, thefirst CSI is persistently reported to the network device.

Optionally, in the implementation of the present disclosure, theterminal device may determine the first CSI reported each time accordingto a dependency relationship among CSI measurement, and report the firstCSI.

In one implementation, the measurement of the first CSI reported eachtime does not depend on the first CSI reported at other times.

For example, CSI reported each time is CSI corresponding to one CSIprocess, and CSI corresponding to different CSI processes is not carriedin one reporting.

For example, CSI reported each time is CSI obtained by the samemeasurement resource, and CSI obtained by different measurementresources is not carried in one reporting.

For example, CSI reported each time is CSI obtained based on anassumption of the same downlink transmission (an assumption of adownlink transmission beam of CSI-RS), and CSI obtained based ondifferent assumptions of downlink beams is not carried in one reporting.

In another implementation, the first CSI for which measurement has adependency relationship is reported on persistent reporting resources.

For example, when CSI corresponding to codebooks of different levels isreported, CSI corresponding to pre-coding information W1 may be reportedon a previous reporting resource, and CSI corresponding to pre-codinginformation W2 and W3 may be reported on subsequent reporting resources.Herein W2 and W3 are calculated based on W1, and complete pre-codinginformation may be obtained by W1, W2, and W3.

Optionally, the activation signaling includes fourth information forindicating a dependency relationship among measurement for the first CSIreported at various times; and the terminal device determines the firstCSI to be reported each time according to the dependency relationshipamong CSI measurement and the fourth information, and reports the firstCSI.

Optionally, in the implementation of the present disclosure, CSI forwhich measurement has a dependency relationship may be divided into thesame CSI group, and CSI for which measurement does not have a dependencyrelationship may be divided into different CSI groups. That is, one CSIgroup includes at least one CSI content, and different CSI groups areindependent, but the CSI content(s) within a CSI group are interrelated(i.e., a CSI content needs to be calculated based on another CSIcontent, or two CSI contents need to be calculated based on the sameresource). Then different CSI contents in one group may be reported onpersistent reporting resources, or all contents in one group may bereported on the same reporting resource.

Optionally, the terminal device receives a first DCI signaling forscheduling a transmission of uplink data; according to the first DCIsignaling, the terminal device determines that transmission of theuplink data needs to be performed in a first time domain resource unitin which the first CSI is persistently reported; and in the first timedomain resource unit, the first CSI is reported to the network device bymultiplexing with the uplink data.

Specifically, if the terminal device receives DCI for scheduling thetransmission of uplink data by the network device in a certain timedomain resource unit during persistent CSI feedback, the CSI to be fedback in the time domain resource unit and the uplink data to betransmitted are multiplexed and then transmitted based on the DCI. CSIreporting is still performed according to an original configuration ofpersistent CSI reporting after this time domain resource unit.

Optionally, the terminal device may perform multiplexing of uplink dataand CSI only under a Multiple Access manner of Discrete Fouriertransform Orthogonal Frequency Division Multiplexing based SpreadSpectrum (DFT-S-OFDM); and transmit the CSI and uplink dataindependently under a Multiple Access manner of Cyclic Prefix OrthogonalFrequency Division Multiplexing (CP-OFDM). At this time, in a first timedomain resource unit, the terminal device may suspend the transmissionof the first CSI; or, regardless of which uplink multiple access manneris adopted, the terminal device may multiplex the uplink data and theCSI.

In this case, the network device may obtain the CSI and the uplink datareported by the terminal device in the first time domain resource unitbased on a configuration of the DCI.

Therefore, in the implementation of the present disclosure, the CSI isreported through a PUSCH and multiplexed with burst data transmission,which may improve a utilization rate of a resource and support greaterfeedback signaling overhead.

Optionally, the terminal device receives a second DCI signaling forscheduling aperiodic CSI reporting; the terminal device determinesaccording to the second DCI signaling that the aperiodic CSI reportingneeds to be performed in a second time domain resource unit in which thefirst CSI is persistently reported; and performs the aperiodic CSIreporting based on the second DCI signaling, and suspends persistentreporting of the first CSI in the second time domain resource unit.

Specifically, if the terminal device receives DCI for schedulingaperiodic CSI reporting by the network device in a certain time domainresource unit during persistent CSI feedback, CSI reporting in the timedomain resource unit is performed based on configuration information ofthe DCI. In the time domain resource unit, the first CSI may be reportedin the aperiodic CSI, or no first CSI may be reported directly. CSIreporting is still performed according to an original configuration ofpersistent CSI reporting after this time domain resource unit.

In this case, the network device may obtain CSI reported by the terminaldevice in a second time domain resource unit based on the configurationof the DCI.

Therefore, the reporting of persistently CSI is suspended when it isneeded to report aperiodic CSI, and the reporting of the persistentlyCSI is performed after the aperiodic CSI is reported, thereby adiversity of CSI reporting may be realized, and communicationrequirements may be satisfied better.

FIG. 3 is a schematic flowchart of a wireless communication method 300according to an implementation of the present disclosure. As shown inFIG. 3, the method 300 includes the following contents.

In 310, a network device sends an activation signaling to a terminaldevice, and the activation signaling is used for activating the terminaldevice to persistently report first CSI.

In 320, the network device persistently receives the first CSI reportedby the terminal device.

In 330, the network device sends a deactivation signaling to theterminal device and stops receiving the first CSI, and the deactivationsignaling is used for instructing the terminal device to stop reportingthe first CSI.

Optionally, the network device persistently receives the first CSIthrough a physical uplink shared channel (PUSCH) or a physical uplinkcontrol channel (PUCCH).

Optionally, the first CSI includes at least one of: CRI, RI, PMI, CQI, aquantized value of channel information, and a quantized value ofinterference.

Optionally, the first CSI includes CRI, and the network device obtainsbeam information of downlink beam-forming for downlink schedulingaccording to the CRI.

Specifically, downlink scheduling may include downlink pre-coding, anddownlink pre-coding may be performed according to the beam informationof downlink beam-forming.

Optionally, when the first CSI includes RI, PMI, and CQI, the networkdevice schedules downlink data for the terminal device according to theRI, the PMI, and the CQI.

Optionally, when the first CSI includes RI and CQI, the network deviceschedules downlink data for the terminal device according to the RI andthe CQI.

Optionally, the activation signaling includes at least one of firstinformation, second information, third information, and fourthinformation. Herein, the first information is used for indicatingcontent included in the first CSI; the second information is used forindicating time when the first CSI is reported for a first time; thethird information is used for indicating a resource for reporting thefirst CSI; the fourth information is used for indicating a dependencyrelationship among measurement for the first CSI reported at varioustimes.

It should be understood that the network device in the method 300 mayimplement the corresponding functions implemented by the terminal devicementioned in the method 200, which will not be described in detailherein for the sake of brevity.

Therefore, in the implementation of the present disclosure, after theterminal device receives the activation signaling sent by the networkdevice for activating the terminal device to persistently report thefirst CSI, the terminal device persistently reports the first CSI to thenetwork device until receiving the deactivation signaling sent by thenetwork device for instructing the terminal device to stop reporting thefirst CSI. Therefore, since CSI reporting is persistently performed, thenetwork device may obtain enough CSI, scheduling quality may beimproved, and the communication performance may be improved. Inaddition, starting and ending of the CSI reporting may be triggeredbased on the activation signaling and the deactivation signaling, sothat CSI may be obtained on demand, and the communication performancemay be further improved.

FIG. 4 is a schematic block diagram of a terminal device 400 accordingto an implementation of the present disclosure. As shown in FIG. 4, theterminal device 400 includes a transceiving unit 410 and a processingunit 420.

The transceiving unit 410 is used for receiving an activation signalingsent by a network device, wherein the activation signaling is used foractivating the terminal device to persistently report first CSI.

The processing unit 420 is used for obtaining the first CSI afterreceiving the activation signaling.

The transceiving unit 410 is used for persistently reporting the firstCSI to the network device until receiving a deactivation signaling sentby the network device, wherein the deactivation signaling is used forinstructing the terminal device to stop reporting the first CSI.

Optionally, the transceiving unit 410 is further used for persistentlyreporting the first CSI to the network device through a physical uplinkshared channel (PUSCH) or a physical uplink control channel (PUCCH).

Optionally, the first CSI includes at least one of: a channel stateinformation reference signal resource indicator (CRI), a rank indicator(RI), a pre-coding matrix indicator (PMI), channel quality information(CQI), a quantized value of channel information, and a quantized valueof interference.

Optionally, the transceiving unit 410 is further used for performingpersistent CSI measurement to obtain the first CSI.

Optionally, the transceiving unit 410 is further used for determining atleast one of the following according to content included in the firstCSI, and performing the persistent CSI measurement according to the atleast one of the following to obtain the first CSI: a resource forperforming the persistent CSI measurement, a quantity of CSI-RS portsused for performing the persistent CSI measurement, and an assumption ofa CSI-RS transmission beam on the resource for performing the CSImeasurement.

Optionally, the transceiving unit 410 is further used for determining afirst time domain resource for reporting the first CSI for a first timeaccording to content included in the first CSI; and reporting the firstCSI for the first time on the first time domain resource.

Optionally, the activation signaling includes first information forindicating content included in the first CSI.

The transceiving unit 410 is further used for reporting persistently thefirst CSI to the network device according to the first information,wherein the first CSI includes the content indicated by the firstinformation.

Optionally, the activation signaling includes second information forindicating time when the first CSI is reported for a first time.

The transceiving unit 410 is further used for determining a second timedomain resource for reporting the first CSI for the first time accordingto the second information, and reporting the first CSI to the networkdevice for the first time on the second time domain resource.

Optionally, the activation signaling includes third information forindicating a resource for reporting the first CSI.

The transceiving unit 410 is further used for reporting persistently thefirst CSI to the network device on the resource indicated by the thirdinformation.

Optionally, the transceiving unit 410 is further used for reportingpersistently the first CSI to the network device on persistent timedomain resource units for uplink transmission; or reporting the firstCSI to the network device periodically with a certain period.

Optionally, the processing unit 420 is further used for determining thefirst CSI reported each time according to a dependency relationshipamong CSI measurement.

Optionally, measurement of the first CSI reported each time does notdepend on the first CSI reported at other times; or, the first CSI forwhich measurement has a dependency relationship is reported onpersistent reporting resources.

Optionally, the activation signaling includes fourth information forindicating a dependency relationship among measurement for the first CSIreported at various times.

Optionally, the transceiving unit 410 is further used for reportingpersistently the first CSI to the network device by adopting at leastone of the following manners: a same Multiple Input Multiple Output(MIMO) transmission mode, a same modulation coding manner, a samequantity of orthogonal frequency division multiplexing symbols, and asame frequency domain resource.

Optionally, the transceiving unit 410 is further used for receiving afirst DCI signaling for scheduling a transmission of uplink data.

The processing unit 420 is further used for determining according to thefirst DCI signaling that the transmission of the uplink data needs to beperformed in a first time domain resource unit in which the first CSI ispersistently reported.

The transceiving unit 410 is further used for reporting the first CSI tothe network device by multiplexing with the uplink data in the firsttime domain resource unit.

Optionally, the transceiving unit 410 is further used for receiving asecond DCI signaling for scheduling aperiodic CSI reporting.

The processing unit is further used for determining according to thesecond DCI signaling that the aperiodic CSI reporting needs to beperformed in a second time domain resource unit in which the first CSIis persistently reported.

The transceiving unit 410 is further used for performing the aperiodicCSI reporting based on the second DCI signaling, and suspendingpersistent reporting of the first CSI in the second time domain resourceunit.

Optionally, the activation signaling and deactivation signaling are aDCI signaling or a MAC signaling.

It should be understood that the terminal device 400 may correspond tothe terminal device in the method 200 and may realize the correspondingfunctions of the network device. For the sake of brevity, the specificdescription will not be repeated here.

FIG. 5 is a schematic block diagram of a network device 500 according toan implementation of the present disclosure. As shown in FIG. 5, thenetwork device 500 includes a processing unit 510 and a transceivingunit 520.

Herein, the processing unit 510 is used for generating an activationsignaling and a deactivation signaling.

The transceiving unit 520 is used for sending the activation signalingto a terminal device, wherein the activation signaling is used foractivating the terminal device to persistently report first CSI;persistently receiving the first CSI reported by the terminal device;sending a deactivation signaling to the terminal device and stoppingreceiving the first CSI, wherein the deactivation signaling is used forinstructing the terminal device to stop reporting the first CSI.

Optionally, the transceiving unit 520 is further used for receiving, bythe network device, persistently the first CSI through a physical uplinkshared channel (PUSCH) or a physical uplink control channel (PUCCH).

Optionally, the first CSI includes at least one of: a channel stateinformation reference signal resource indicator (CRI), a rank indicator(RI), a pre-coding matrix indicator (PMI), channel quality information(CQI), a quantized value of channel information, and a quantized valueof interference.

Optionally, the processing unit 510 is further used for obtaining beaminformation of downlink beam-forming according to CRI when the first CSIincludes the CRI; or, scheduling downlink data for the terminal deviceaccording to RI, PMI, and CQI when the first CSI includes the RI, thePMI, and the CQI; or, scheduling downlink data for the terminal deviceaccording to RI and CQI when the first CSI includes the RI and the CQI.

Optionally, the activation signaling includes at least one of firstinformation, second information, third information, and fourthinformation. Herein, the first information is used for indicatingcontent included in the first CSI; the second information is used forindicating time when the first CSI is reported for a first time; thethird information is used for indicating a resource for reporting thefirst CSI; and the fourth information is used for indicating adependency relationship among measurement for the first CSI reported atvarious times.

It should be understood that the network device 500 may correspond tothe network device in the method 300, and may realize the correspondingfunctions of the network device, which will not be described in detailherein for the sake of brevity.

FIG. 6 is a schematic block diagram of a communication device 600according to an implementation of the present disclosure. As shown inFIG. 6, the communication device 600 includes a processor 610 and amemory 620. The memory 620 may store program codes, and the processor610 may execute the program codes stored in the memory 620.

Optionally, as shown in FIG. 6, the communication device 600 may includea transceiver 630, and the processor 610 may control the transceiver 630to communicate with the external.

Optionally, the processor 610 may call the program codes stored in thememory 620 to perform corresponding operations of the terminal device inthe method 200 shown in FIG. 2, which will not be described hererepeatedly for brevity.

Optionally, the processor 610 may call the program codes stored in thememory 620 to perform corresponding operations of the network device inthe method 300 shown in FIG. 3, which will not be described hererepeatedly for brevity.

FIG. 7 is a schematic structural diagram of a system chip 700 accordingto an implementation of the present disclosure. The system chip 700 ofFIG. 7 includes an input interface 701, an output interface 702, aprocessor 703, and a memory 704. The processor 703 and the memory 704are connected by a communication connection, and the processor 703 isused for executing codes in the memory 704.

Optionally, when the codes are executed, the processor 703 implementsthe method executed by the terminal device in the method 200 shown inFIG. 2. For sake of conciseness, the specific description will not berepeated here.

Optionally, when the codes are executed, the processor 703 implementsthe method executed by the network device in the method 300 shown inFIG. 3. For sake of conciseness, the specific description will not berepeated here.

Those of ordinary skill in the art will recognize that the exemplaryunits and algorithm acts described in connection with theimplementations disclosed herein may be implemented in electronichardware, or a combination of computer software and electronic hardware.Whether these functions are implemented in hardware or software dependson a specific application and design constraint of the technicalsolution. Skilled in the art may use different manners to realize thedescribed functions for each particular application, but suchrealization should not be considered to be beyond the scope of thepresent disclosure.

Those skilled in the art may clearly understand that for convenience andconciseness of description, the specific working process of the system,device and unit described above may refer to the corresponding processin the aforementioned implementations of methods, and details are notdescribed herein again.

In several implementations provided by the present disclosure, it shouldbe understood that the disclosed system, device and method may beimplemented in other ways. For example, the apparatus implementationsdescribed above are only illustrative, for another example, the divisionof the units is only a logical function division, and there may be otherdivision manners in actual realization. For still another example,multiple units or components may be combined or integrated into anothersystem, or some features may be ignored or not executed. On the otherhand, the mutual coupling or direct coupling or communication connectionshown or discussed may be indirect coupling or communication connectionthrough some interfaces, devices or units, and may be in electrical,mechanical or other forms.

The units described as separated components may or may not be physicallyseparated, and the component shown as a unit may or may not be aphysical unit, i.e., it may be located in one place or may be allocatedover multiple network units. Some or all of the units may be selectedaccording to practical needs to achieve a purpose of the solution of theimplementations.

In addition, various functional units in various implementations of thepresent disclosure may be integrated in one processing unit, or variousunits may be physically present separately, or two or more units may beintegrated in one unit.

The functions may be stored in a computer readable storage medium ifimplemented in a form of a software functional unit and sold or used asa separate product. Based on this understanding, the technical solutionof the present disclosure, in essence, or the part contributing to theexisting art, or the part of the technical solution, may be embodied inthe form of a software product stored in a storage medium, includingseveral instructions for causing a computer device (which may be apersonal computer, a server, or a network device, etc.) to perform allor part of the acts of the methods described in various implementationsof the present disclosure. The aforementioned storage media include Udisk, mobile hard disk, read-only memory (ROM), random access memory(RAM), magnetic disk or optical disk, and other media capable of storingprogram codes.

The foregoing are merely exemplary implementations of the presentdisclosure, but the protection scope of the present disclosure is notlimited thereto. Any person skilled in the art may easily conceivevariations or substitutions within the technical scope disclosed by thepresent disclosure, which should be included within the protection scopeof the present disclosure. Therefore, the protection scope of thepresent disclosure should be subject to the protection scope of theclaims.

The invention claimed is:
 1. A method for wireless communication, comprising: receiving, by a terminal device, an activation signaling sent by a network device, wherein the activation signaling is used for activating the terminal device to persistently report first channel state information (CSI), and the activation signaling comprises first information for indicating content being included in the first CSI; and reporting, by the terminal device, persistently the first CSI to the network device after receiving the activation signaling until the terminal device receives a deactivation signaling sent by the network device, wherein the deactivation signaling is used for instructing the terminal device to stop reporting the first CSI, wherein the method further comprises: determining, by the terminal device, an assumption of a CSI-RS transmission beam on the resource for performing the CSI measurement according to the content being included in the first CSI, and performing, by the terminal device, persistent CSI measurement based on the assumption of the CSI-RS transmission beam on the resource for performing the CSI measurement to obtain the first CSI.
 2. The method according to claim 1, wherein the reporting, by the terminal device, persistently the first CSI to the network device, comprises: reporting, by the terminal device, persistently the first CSI to the network device through a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH).
 3. The method according to claim 1, wherein the first CSI comprises at least one of: a channel state information reference signal resource indicator (CRI), a rank indicator (RI), a pre-coding matrix indicator (PMI), channel quality information (CQI), a quantized value of channel information, and a quantized value of interference.
 4. The method according to claim 3, wherein the performing, by the terminal device, the persistent CSI measurement to obtain the first CSI, further comprises: determining, by the terminal device, at least one of the following according to the content being included in the first CSI, and performing the persistent CSI measurement according to the at least one of the following to obtain the first CSI: a resource for performing the persistent CSI measurement, or a quantity of channel state information reference signal (CSI-RS) ports used for performing the persistent CSI measurement.
 5. The method according to claim 1, wherein the reporting, by the terminal device, persistently the first CSI to the network device, comprises: reporting, by the terminal device, persistently the first CSI to the network device according to the first information.
 6. The method according to claim 1, wherein the activation signaling comprises second information, and the second information is used for indicating a second time domain resource when the first CSI is reported for a first time; and the reporting, by the terminal device, persistently the first CSI to the network device, comprises: determining, by the terminal device, a second time domain resource for reporting the first CSI for the first time according to the second information, and reporting the first CSI to the network device for the first time on the second time domain resource.
 7. The method according to claim 6, wherein the method further comprises: determining, by the terminal device, time domain resources for subsequent persistent reporting of the first CSI according to the second time domain resource for reporting the first CSI for the first time and a period obtained in advance for reporting persistently the first CSI.
 8. The method according to claim 1, wherein the activation signaling comprises third information for indicating a resource for reporting the first CSI; and the reporting, by the terminal device, persistently the first CSI to the network device, comprises: reporting, by the terminal device, persistently the first CSI to the network device on the resource indicated by the third information.
 9. The method according to claim 1, wherein the reporting, by the terminal device, persistently the first CSI to the network device, comprises: reporting, by the terminal device, persistently the first CSI to the network device on persistent time domain resource units for uplink transmission; or reporting, by the terminal device, the first CSI to the network device periodically with a certain period.
 10. The method according to claim 1, wherein the reporting, by the terminal device, persistently the first CSI to the network device, comprises: determining, by the terminal device, the first CSI reported each time according to a dependency relationship among CSI measurement, and reporting the first CSI.
 11. The method according to claim 1, wherein the reporting, by the terminal device, persistently the first CSI to the network device, comprises: reporting, by the terminal device, persistently the first CSI to the network device by adopting at least one of: a same Multiple Input Multiple Output (MIMO) transmission mode, a same modulation coding manner, a same quantity of orthogonal frequency division multiplexing symbols, and a same frequency domain resource.
 12. The method according to claim 1, wherein the activation signaling and deactivation signaling are a DCI signaling or a media access control (MAC) signaling.
 13. A terminal device, comprising a transceiver and a processor; wherein, the transceiver is used for receiving an activation signaling sent by a network device, wherein the activation signaling is used for activating the terminal device to persistently report first channel state information (CSI), and the activation signaling comprises first information for indicating content being included in the first CSI; the processor is used for obtaining the first CSI after receiving the activation signaling; the transceiver is further used for persistently reporting the first CSI to the network device until receiving a deactivation signaling sent by the network device, wherein the deactivation signaling is used for instructing the terminal device to stop reporting the first CSI; and the transceiver is further used for determining an assumption of a CSI-RS transmission beam on the resource for performing the CSI measurement according to the content being included in the first CSI, and performing the persistent CSI measurement according to the assumption of the CSI-RS transmission beam on the resource for performing the CSI measurement to obtain the first CSI.
 14. The terminal device according to claim 13, wherein the transceiver is further used for: persistently reporting the first CSI to the network device through a physical uplink shared channel (PUSCH) or a physical uplink control channel (PUCCH).
 15. The terminal device according to claim 13, wherein the first CSI comprises at least one of: a channel state information reference signal resource indicator (CRI), a rank indicator (RI), a pre-coding matrix indicator (PMI), channel quality information (CQI), a quantized value of channel information, and a quantized value of interference.
 16. The terminal device according to claim 13, wherein the transceiver is further used for: determining at least one of the following according to the content being included in the first CSI, and performing the persistent CSI measurement according to the at least one of the following to obtain the first CSI: a resource for performing the persistent CSI measurement, or a quantity of channel state information reference signal (CSI-RS) ports used for performing the persistent CSI measurement.
 17. The terminal device according to claim 13, wherein the transceiver is further used for: reporting persistently the first CSI to the network device according to the first information.
 18. The terminal device according to claim 13, wherein the activation signaling comprises second information, and the second information is used for indicating a second time domain resource when the first CSI is reported for a first time; the processor is further used for: determining a second time domain resource for reporting the first CSI for the first time according to the second information; and the transceiver is further used for: reporting the first CSI to the network device for the first time on the second time domain resource.
 19. The terminal device according to claim 18, wherein the transceiver is further used for determining time domain resources for subsequent persistent reporting of the first CSI according to the second time domain resource for reporting the first CSI for the first time and a period obtained in advance for reporting persistently the first CSI.
 20. The terminal device according to claim 13, wherein the activation signaling comprises third information for indicating a resource for reporting the first CSI; and the transceiver is further used for: reporting persistently the first CSI to the network device on the resource indicated by the third information.
 21. The terminal device according to claim 13, wherein the transceiver is further used for: reporting persistently the first CSI to the network device on persistent time domain resource units for uplink transmission; or reporting the first CSI to the network device periodically with a certain period.
 22. The terminal device according to claim 13, wherein the processor is further used for: determining the first CSI reported each time according to a dependency relationship among CSI measurement.
 23. The terminal device according to claim 13, wherein the transceiver is further used for: reporting persistently the first CSI to the network device by adopting at least one of: a same Multiple Input Multiple Output (MIMO) transmission mode, a same modulation coding manner, a same quantity of orthogonal frequency division multiplexing symbols, and a same frequency domain resource.
 24. The terminal device according to claim 13, wherein the activation signaling and deactivation signaling are a DCI signaling or a media access control (MAC) signaling. 